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The autocorrelation characteristic of Nakagami-m fading channel simulated by the original Inverse Method agree with the theoretical value poor because of the loss of phase information. An efficient method to improve the autocorrelation characteristic of the Inverse Method is presented adding the lost phase information of Rayleigh sequence during inverse transform process by symbol correction. Simulation...
BPSK-signals reception quality depends on the quality of the signal processing. BPSK-modulated codes reception quality depends on the quality of the correlation functions. RF frontend distortions leads to efficiency of the signal processing degrading. RF frontend non-optimal filtering, noise and dynamic range limiting has significant impact on the signal processing quality. In this research simulation...
In order to overcome the major implementation problem of long delay line requirement in the conventional transmitted reference (TR) signaling, transmitted reference pulse cluster (TRPC) structure was proposed and further developed for noncoherent ultra-wideband (UWB) systems. In this paper, weighted autocorrelation receiver (WAcR) is introduced for the TRPC system with hybrid binary phase shift keying...
Response surface methodology (RSM) has been widely used in practice, which can optimize single response versus several factors. Naturally people are not only interested in single response optimization, but also multiple responses optimization. In this paper we propose a general framework for multiple responses optimization using Bayesian posterior predictive method. This method can account for the...
Despite the great development in modeling the I-V characteristics of the PV module, the outdoor conditions variations still the main difficulty to predict its performances. In this work, anew approach proposed to reconstruct the I-V characteristic of a PV module under variousreal conditions of irradiance and temperature. Based on the characterization tests data, carried out on four different PV modules...
Unavoidable process random variation causes mismatches to deviate the performance of many analog circuit blocks. In addition, the correlation between components is also related to the performance parameters of analog circuits. This paper proposes a layout strategy to reduce the random error by making the trade-offs among performance parameter, correlation coefficient, and area allocation cost. Simulation...
Transform domain communication system (TDCS) has been proposed to support multiuser communications through spectrum bin nulling and frequency domain spreading for overlay cognitive radio networks. In TDCS systems, specific pseudorandom spreading sequences are assigned to different users for the purpose of multiple access. However, due to the non-zero cross-correlations between any pair of TDCS signals,...
An application of Adaptive Filters (AF) in Desired Signal Extraction (DSE) embedded in Unknown Dynamic System (UDS) is explored in the current research. Least Mean Square Algorithm (LmSA) is utilized in proposed DSE. The UDS is synthesized by adopting Pseudo Random Binary Sequence (PrBS) excitation. To start with the LMSA is educated to converge and adapt its coefficients to the prevailing PRBS signal...
The Wiener filtering deconvolution algorithm applied to the correlation identification method which stability is poor and identification effect is undesirable that caused by the noise change of outside the band. The reasons of Wiener filtering deconvolution algorithm which adaptive of noise is unsatisfactory is analyzed by this undesirable consequence. The incremental wiener filter that used in correlation...
The orthogonality principle states that as an adaptive filter approaches to the Weiner solution and error approaches to its minimum value, the correlation between error and input signal approaches to zero. This fact has been exploited in the proposed scheme for the minimizing mean square deviation (MSD) for the tap weights and its estimated value at each iteration. Essentially, this paper proposes...
Electromagnetic emission must be properly addressed in complex multi-chip packages (MCM) due to highly miniaturized form-factor requirements. Such modules induce electric and magnetic fields due to high frequency current paths, and if not contained within a susceptible limit, can cause other electronic components to malfunction or compliance failure. Testing for electromagnetic interference (EMI)...
The University of the Philippines places a high regard on its undergraduate programs. A significant budget is allocated by the Philippine government for the university's undergraduate programs because of its impact to the country's research and development, education, governance, and other aspects. However, a number of undergraduate students drop out of the campus or shift out from one program to...
UWB based on chirp waveforms has the advantages of low cost, low power consumption and high processing gain. A multiple access UWB system based on multi-chirp waveforms is proposed[ Sponsored by Tianjin science and technology planning project(No:13ZCZDSY20100)], which enables the system to gain merits of both IR-UWB and OFDM-UWB. System performance for multi-user UWB using multi-chirp waveforms is...
This paper presents the first stage of the analysis on determining the Signal Quality Coefficient in the vibro-acoustic domain. This stage is mandatory in order to determine if two analog signals, one considered “target” and the other “reference”, have a certain amount of similarity and the “target” waveform maintain its integrity reported to the “reference” waveform. This analysis can be used for...
Reconfigurable circuit design has become very important in the last decade for increasing the lifetime of CMOS circuits in deep sub-micron technologies. Sense & React approach is one of the reconfigurable design approaches, where degradation in a circuit performance is detected via sensor circuitry and a pre-established recovery operation is applied to circuit. However, sense operations are quite...
In this paper, we propose a novel greedy iteration algorithm, called block matching pursuit (BMP), for arbitrary block sparse signal recovery. BMP can recover the target signal without prior information of block structure or block length and can estimate the true sparsity level. In each iteration, BMP processes a correlation test to estimate nonzero entries of signal with a fixed step size, and then...
Optimization of large-scale complex systems often involves high-fidelity computational simulation models that are very time-consuming. As a result, the number of objective function evaluations is often very limited and presents a major hurdle for optimization. Previous works on a new framework known as ordinal transformation (OT) provides a method that makes use of a low-fidelity approximate model...
As the semiconductor technology node shrinks to 28 nm and beyond, not only the difficulty of lithographic process becomes higher and higher, the design rule setup is becoming more challenging. As the critical dimension (CD) enters the range that it shrinks faster than the shrink of the coherence length, which is defined by both numerical aperture and degree of coherence in the illumination condition...
Multiple input, Multiple output space time spreading (MIMO STS) system is a scheme which can provide full diversity gain without extra resource requirements. However, its performance degrades significantly when multiple access interference (MAI) occurs. In order to mitigate MAI effects, we propose a criterion to build a promising set of combination of spreading sequences for users. Simulation results...
This paper proposes a fast algorithm to reduce the high computational complexity of depth map coding in 3D-HEVC, which obstructs 3D video from the practical applications. Due to the special feature of depth maps, depth modelling modes (DMMs) were developed to keep sharp edges for depth map. Consequently, the 3D-HEVC encoder can improve the coding performance of synthesized views significantly. However,...
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